Moxa Technologies PowerTransPT-7728-PTP User manual

Moxa PowerTrans Switch PT-7728-PTP
First Edition, September 2010
www.moxa.com/product
© 2010 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

Moxa PowerTrans Switch PT-7728-PTP
The software described in this manual is furnished under a license agreement and may be used only in accordance with
the terms of that agreement.
Copyright Notice
Copyright ©2010 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
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products and/or the programs described in this manual, at any time.
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Table of Contents
1. Introduction...................................................................................................................................... 1-1
Overview...........................................................................................................................................1-2
Package Checklist...............................................................................................................................1-2
Software Features ..............................................................................................................................1-2
2. Getting Started ................................................................................................................................. 2-1
Serial Console Configuration (115200, None, 8, 1, VT100).......................................................................2-2
Configuration by Telnet Console....................................................................................................2-4
Configuration by Web Browser .............................................................................................................2-6
Disabling Telnet and Browser Access.....................................................................................................2-7
3. Featured Functions ........................................................................................................................... 3-1
Configuring Basic Settings ...................................................................................................................3-2
System Identification...................................................................................................................3-2
Password ...................................................................................................................................3-2
Accessible IP...............................................................................................................................3-3
Port...........................................................................................................................................3-4
Network.....................................................................................................................................3-5
IPv4 ..........................................................................................................................................3-6
IPv6 ..........................................................................................................................................3-6
GARP Timer Parameters...............................................................................................................3-7
Time..........................................................................................................................................3-8
Daylight Saving Time...................................................................................................................3-8
Configuring IEEE 1588/PTP ..................................................................................................................3-9
PTP Setting...............................................................................................................................3-10
System File Update—By Remote TFTP..........................................................................................3-13
System File Update—By Local Import/Export ................................................................................3-14
System File Update—By Backup Media.........................................................................................3-15
Restart.....................................................................................................................................3-15
Factory Default .........................................................................................................................3-15
Using Port Trunking ..........................................................................................................................3-15
The Port Trunking Concept .........................................................................................................3-16
Configuring Port Trunking...........................................................................................................3-16
Configuring SNMP.............................................................................................................................3-17
SNMP Read/Write Settings..........................................................................................................3-18
Trap Settings............................................................................................................................3-20
Private MIB information..............................................................................................................3-20
Using Communication Redundancy .....................................................................................................3-21
The Turbo Ring Concept.............................................................................................................3-21
Configuring Turbo Ring and Turbo Ring V2 ...................................................................................3-24
The Turbo Chain Concept...................................................................................................................3-28
Configuring “Turbo Chain” .................................................................................................................3-28
Head Switch Configuration .........................................................................................................3-28
Member Switch Configuration .....................................................................................................3-29
Tail Switch Configuration............................................................................................................3-29
Explanation of “Current Status” Items..........................................................................................3-29
The STP/RSTP Concept ..............................................................................................................3-30
Configuring STP/RSTP................................................................................................................3-33
Using Traffic Prioritization..................................................................................................................3-35
The Traffic Prioritization Concept.................................................................................................3-35
Configuring Traffic Prioritization ..................................................................................................3-37
Using Virtual LAN..............................................................................................................................3-39
The Virtual LAN (VLAN) Concept..................................................................................................3-40
Sample Applications of VLANs using the PT-7728-PTP ....................................................................3-42
Configuring Virtual LAN..............................................................................................................3-43
Using Multicast Filtering.....................................................................................................................3-44
The Concept of Multicast Filtering................................................................................................3-44
Configuring IGMP Snooping ........................................................................................................3-47
Add Static Multicast MAC............................................................................................................3-48
Configuring GMRP .....................................................................................................................3-48
GMRP Table..............................................................................................................................3-49
Using Bandwidth Management............................................................................................................3-49
Broadcast Storm Protection ........................................................................................................3-49
Traffic Rate Limiting Settings ......................................................................................................3-50
Using Port Access Control ..................................................................................................................3-50
Configuring Static Port Lock........................................................................................................3-51
Configuring IEEE 802.1X ............................................................................................................3-51
Using IP Filter ..................................................................................................................................3-54
Using Auto Warning ..........................................................................................................................3-54
Configuring Email Warning .........................................................................................................3-54

Event Type...............................................................................................................................3-55
Email Setup..............................................................................................................................3-56
Configuring Relay Warning .........................................................................................................3-57
Event Setup..............................................................................................................................3-57
Warning List .............................................................................................................................3-58
Using Line-Swap-Fast-Recovery..........................................................................................................3-58
Configuring Line-Swap Fast Recovery ..........................................................................................3-58
Using Set Device IP...........................................................................................................................3-58
Configuring Set Device IP...........................................................................................................3-59
DHCP Relay Agent (Option 82) ...........................................................................................................3-60
Using Diagnosis................................................................................................................................3-62
Mirror Port................................................................................................................................3-62
Ping.........................................................................................................................................3-62
LLDP Function Overview ....................................................................................................................3-63
LLDP Web Interface...................................................................................................................3-63
LLDP Settings ...........................................................................................................................3-63
LLDP Table ...............................................................................................................................3-63
Using Monitor...................................................................................................................................3-64
Monitor by Switch......................................................................................................................3-64
Monitor by Port.........................................................................................................................3-64
Using the MAC Address Table.............................................................................................................3-65
Using System Log.............................................................................................................................3-65
Event Log.................................................................................................................................3-65
Syslog .....................................................................................................................................3-66
Using HTTPS/SSL..............................................................................................................................3-67
A. MIB Groups ....................................................................................................................................... A-1
B. Specifications.................................................................................................................................... B-1
C. Modbus/TCP Map .............................................................................................................................. C-1

1
1. Introduction
Welcome to the PowerTrans PT-7728-PTP, a managed redundant Gigabit Ethernet switch designed especially
for connecting Ethernet-enabled devices for industrial field applications.
The following topics are covered in this chapter:

Overview

Package Checklist

Software Features

PT-7728-PTP Introduction
1-2
Overview
The PowerTrans PT-7728-PTP is certified for use in power substation automation systems (IEC 61850-3, IEEE
1613), and railway applications (EN50121-4). It can be used for Gigabit or Fast Ethernet backbones and
supports redundant ring topologies. It also supports dual power inputs (24/48 VDC or 110/220 VDC/VAC) to
increase the reliability of communication.
The PT-7728-PTP has a modular design that makes network planning easy and allows greater flexibility. You
can install up to 4 Gigabit Ethernet ports and 24 Fast Ethernet ports. Optional front or rear wiring makes the
PT-7728-PTP suitable for different applications.
Package Checklist
The PowerTrans PT-7728-PTP is shipped with the following items. If any of these items is missing or damaged,
please contact your customer service representative for assistance.
•1 PowerTrans PT-7728-PTP
•Hardware installation guide
•CD-ROM with user’s manual and SNMP MIB file
•Warranty statement
•RJ45-to-DB9 console port cable
•Protective caps for unused ports
•2 rackmount attachments
Software Features
•Turbo Ring, Turbo Chain, and RSTP/STP (IEEE 802.1W/D)
•IEEE 1588 v2 PTP (Precision Time Protocol) for precise time synchronization of networks
•DHCP Option 82 for IP address assignment for different policies
•Supports Modbus TCP for easy integration in HMI
•Supports LLDP (Link Layer Discovery Protocol)
•IGMP snooping, GMRP to filter multicast traffic from industrial Ethernet protocols
•IEEE 802.1Q VLAN, GVRP for easier network planning
•QoS-IEEE 802.1p/1Q and TOS/DiffServ to increase determinism
•802.3ad, LACP for bandwidth optimization
•IEEE 802.1X and https/SSL to enhance network security
•SNMP V1/V2c/V3 for differential network management
•RMON for efficient, proactive network monitoring
•Supports ABC-01 for system configuration backup
•Access restriction by MAC address
•Port mirroring for online debugging
•Automatic warnings by email, relay output
•Automatic recovery of connected device’s IP addresses
•Line-swap fast recovery
•Configuration through web browser, Telnet/serial console, Windows utility, and ABC-01

2
2. Getting Started
This chapter covers the initial installation process for the PT-7728-PTP. There are three ways to access the
PT-7728-PTP’s configuration settings: serial console, Telnet console, and web console. If you do not know the
PT-7728-PTP’s IP address, you can open the serial console by connecting the PT-7728-PTP to a PC’s COM port
with a short serial cable. You can open the Telnet or web console over an Ethernet LAN or over the Internet.
The following topics are covered in this chapter:

Serial Console Configuration (115200, None, 8, 1, VT100)
Configuration by Telnet Console

Configuration by Web Browser

Disabling Telnet and Browser Access

PT-7728-PTP Getting Started
2-2
Serial Console Configuration (115200, None, 8,
1, VT100)
NOTE •You cannot connect to the serial and Telnet console at the same time.
•You can connect to the web console and another console (serial or Telnet) at the same time.
However, it is strongly recommended that you do NOT do so. Following this advice will allow you to
maintain better control over the PT-7728-PTP’s configuration.
NOTE We recommend using PComm Terminal Emulator when opening the serial console. This software can be
downloaded free of charge from the Moxa website.
Before running PComm Terminal Emulator, use an RJ45 to DB9-F (or RJ45 to DB25-F) cable to connect the
PT-7728-PTP’s console port to your PC’s COM port (generally COM1 or COM2, depending on how your system
is set up).
After installing PComm Terminal Emulator, open the PT-7728-PTP’s serial console as follows:
1. From the Windows desktop, click Start Programs PComm Lite 1.3 Terminal Emulator.
2. Select Open under the Port Manager menu to open a new connection.
3. The Property window should open. On the Communication Parameter tab for Ports, select the COM
port that is being used for the console connection. Set the other fields as follows: 115200 for Baud Rate,
8 for Data Bits, None for Parity, and 1 for Stop Bits.

PT-7728-PTP Getting Started
2-3
4. On the Terminal tab, select VT100 for Terminal Type. Click OK.
5. In the terminal window, the PT-7728-PTP will prompt you to select a terminal type. Enter 1 to select
ansi/vt100 and press Enter.
6. The serial console will prompt you to log in. Press Enter and select admin or user. Use the down arrow key
on your keyboard to select the Password field and enter a password if desired. This password will be
required to access any of the consoles (web, serial, Telnet). If you do not wish to create a password, leave
the Password field blank and press Enter.
7. The Main Menu of the PT-7728-PTP’s serial console should appear. (In PComm Terminal Emulator, you can
adjust the font by selecting Font… in the Edit menu.)

PT-7728-PTP Getting Started
2-4
8. Use the following keys on your keyboard to navigate the PT-7728-PTP’s serial console:
Key Function
Up, down, right, left arrow keys Tab Move the onscreen cursor
Enter Display and select options
Space Toggle options
Esc Previous menu
Configuration by Telnet Console
You may open the PT-7728-PTP’s Telnet or web console over a network. This requires that the PC host and
PT-7728-PTP are on the same logical subnet. You may need to adjust your PC host’s IP address and subnet
mask. By default, the PT-7728-PTP’s IP address is 192.168.127.253 and PT-7728-PTP’s subnet mask is
255.255.255.0 (for a Class C network). This means that your PC’s IP address must be set to 192.168.xxx.xxx
for a subnet mask of 255.255.0.0, or to 192.168.127.xxx with a subnet mask of 255.255.255.0.
NOTE To connect to the PT-7728-PTP’s Telnet or web console, your PC host and the PT-7728-
PTP must be on the
same logical subnet.
NOTE When connecting to the PT-7728-PTP’s Telnet or web console, first connect one of PT-7728-PTP’s Ethernet
ports to your Ethernet LAN or directly to your PC’s Ethernet port. You may use either a straight-through or
cross-over Ethernet cable.
NOTE The PT-7728-PTP’s default IP address is 192.168.127.253.
After making sure that the PT-7728-PTP is connected to the same LAN and logical subnet as your PC, open the
PT-7728-PTP’s Telnet console as follows:
1. Click Start Run from the Windows Start menu. Telnet to the PT-7728-PTP’s IP address from the Windows
Run window. You may also issue the Telnet command from a DOS prompt.
2. In the terminal window, the Telnet console will prompt you to select a terminal type. Type 1 to choose
ansi/vt100, and then press Enter.

PT-7728-PTP Getting Started
2-5
3. The Telnet console will prompt you to log in. Press Enter and select admin or user. Use the down arrow
key on your keyboard to select the Password field and enter a password if desired. This password will be
required to access any of the consoles (web, serial, Telnet). If you do not wish to create a password, leave
the Password field blank and press Enter.
4. The Main Menu of the PT-7728-PTP’s Telnet console should appear.
5. In the terminal window, select Preferences… from the Terminal menu on the menu bar.
6. The Terminal Preferences window should appear. Make sure that VT100 Arrows is checked.
7. Use the following keys on your keyboard to navigate the PT-7728-PTP’s Telnet console:
Key Function
Up, down, right, left arrow keys
Tab Move the onscreen cursor
Enter Display and select options
Space Toggle options
Esc Previous menu
NOTE The Telnet console looks and operates in precisely the same manner as the serial console.

PT-7728-PTP Getting Started
2-6
Configuration by Web Browser
The PT-7728-PTP’s web console is a convenient way to modify the configuration and access the built-in
monitoring and network administration functions. You can open the PT-7728-PTP’s web console using a
standard web browser such as Internet Explorer or Netscape.
NOTE To connect to the PT-7728-PTP’s Telnet or web console, your PC host and the PT-7728-
PTP must be on the
same logical subnet.
NOTE If the PT-7728-PTP is configured for other VLAN settings, you must make sure your PC host is on the
management VLAN.
NOTE When connecting to the PT-7728-PTP’s Telnet or web console, first connect one of PT-7728-PTP’s Ethernet
ports to your Ethernet LAN or directly to your PC’s Ethernet port. You may use either a straight-through or
cross-over Ethernet cable.
NOTE The PT-7728-PTP’s default IP address is 192.168.127.253.
After making sure that the PT-7728-PTP is connected to the same LAN and logical subnet as your PC, open the
PT-7728-PTP’s web console as follows:
1. Point your web browser to the PT-7728-PTP’s IP address by entering it in the Address or URL field.
2. The PT-7728-PTP’s web console will open, and you will be prompted to log in. Select the login account
(admin or user) and enter the Password. This password will be required to access any of the consoles (web,
serial, Telnet). If you do not wish to create a password, leave the Password field blank and press Enter.
NOTE By default, a password is not assigned to the PT-7728-PTP’s web, serial, and Telnet consoles.
3. After logging in, you may need to wait a few moments for the web console to appear. Use the folders in the
left navigation panel to navigate between different pages of configuration options.

PT-7728-PTP Getting Started
2-7
Disabling Telnet and Browser Access
If you are connecting the PT-7728-PTP to a public network but do not intend to manage it over the network, we
suggest disabling both the Telnet and web consoles. This is done through the serial console, by navigating to
System Identification under Basic Settings. Disable or enable the Telnet Console and Web
Configuration as shown below:

3
3. Featured Functions
This chapter explains how to access the PT-7728-PTP’s various configuration, monitoring, and administration
functions. These functions can be accessed by serial, Telnet, or web console. The serial console can be used if
you do not know the PT-7728-PTP’s IP address and you need to connect the PT-7728-PTP to a PC COM port. The
Telnet and web consoles can be opened over an Ethernet LAN or the Internet.
The web console is the most user-friendly way to configure the PT-7728-PTP. In this chapter, we use the web
console interface to introduce the functions. There are only a few differences between the web console, serial
console, and Telnet console.
The following topics are covered in this chapter:

Configuring Basic Settings

Configuring IEEE 1588/PTP

Using Port Trunking

Configuring SNMP

Using Communication Redundancy

The Turbo Chain Concept

Configuring “Turbo Chain”

Using Traffic Prioritization

Using Virtual LAN

Using Multicast Filtering

Using Bandwidth Management

Using Port Access Control

Using IP Filter

Using Auto Warning

Using Line-Swap-Fast-Recovery

Using Set Device IP

DHCP Relay Agent (Option 82)

Using Diagnosis

LLDP Function Overview

Using Monitor

Using the MAC Address Table

Using System Log

Using HTTPS/SSL

PT-7728-PTP Featured Functions
3-2
Configuring Basic Settings
Basic Settings include the most common settings required by administrators to maintain and control the
PT-7728-PTP.
System Identification
System Identification items are displayed at the top of the web console and will be included in alarm emails.
You can set the System Identification items to make it easier to identify different switches that are connected
to your network.
Switch Name
Setting Description Factory Default
Max. 30 characters This option is useful for differentiating between the roles or
applications of different units.
Example: Factory Switch 1.
Managed
Redundant Switch
[Serial no. of this
switch]
Switch Location
Setting Description Factory Default
Max. 80 characters This option is useful for differentiating between the locations of
different units. Example: production line 1. Switch Location
Switch Description
Setting Description Factory Default
Max. 30 characters This option is useful for recording a more detailed description of
the unit. None
Maintainer Contact Info
Setting Description Factory Default
Max. 30 characters This option is useful for providing information about who is
responsible for maintaining this unit and how to contact this
person.
None
Password
The PT-7728-PTP provides two levels of configuration access. The admin account has read/write access of all
configuration parameters, and the user account has read access only. The user account can only view the
configuration, but will not be able to make modifications.

PT-7728-PTP Featured Functions
3-3
ATTENTION
By default, a password is not assigned to the PT-7728-PTP
’s web, Telnet, and serial consoles. If a password
is assigned, you will be required to enter the password when you open the serial console, Telnet console, or
Web console.
Account
Setting Description Factory Default
Admin This account can modify the PT-7728-PTP’s configuration. admin
User This account can only view the PT-7728-PTP’s configurations.
Password
Setting Description Factory Default
Old password
(max. 16 characters) Enter the current password None
New password
(Max. 16 characters) Enter the desired new password. Leave it blank if you want to remove the password. None
Retype password (Max.
16 characters) Enter the desired new password again. Leave it blank if you want to remove the password. None
Accessible IP
The PT-7728-PTP uses an IP address-based filtering method to control access.
You may add or remove IP addresses to limit access to the PT-7728-PTP. When the accessible IP list is enabled,
only addresses on the list will be allowed access to the PT-7728-PTP. Each IP address and netmask entry can
be tailored for different situations:
•Grant access to one host with a specific IP address
For example, enter IP address 192.168.1.1 with netmask 255.255.255.255 to allow access to 192.168.1.1
only.
•Grant access to any host on a specific subnetwork
For example, enter IP address 192.168.1.0 with netmask 255.255.255.0 to allow access to all IPs on the
subnet defined by this IP address/subnet mask combination.
•Grant acces to all hosts
Make sure the accessible IP list is not enabled. Remove the checkmark from Enable the accessible IP
list.
The following table shows additional configuration examples:
Hosts That Need Access Input Format
Any host Disable
192.168.1.120 192.168.1.120 / 255.255.255.255

PT-7728-PTP Featured Functions
3-4
192.168.1.1 to 192.168.1.254 192.168.1.0 / 255.255.255.0
192.168.0.1 to 192.168.255.254 192.168.0.0 / 255.255.0.0
192.168.1.1 to 192.168.1.126 192.168.1.0 / 255.255.255.128
192.168.1.129 to 192.168.1.254 192.168.1.128 / 255.255.255.128
Port
Port settings are included to give the user control over port access, port transmission speed, flow control, and
port type (MDI or MDIX).
Enable
Setting Description Factory Default
Checked Allows data transmission through the port. Enabled
Unchecked Immediately shuts off port access.
ATTENTION
If a connected device or sub-network is wreaking havoc on the rest of the network, the Disable
option under
Advanced Settings/Port gives the administrator a quick way to shut off access through this port
immediately.
Description
Setting Description Factory Default
Media type Displays the media type for each module’s port N/A
Name
Setting Description Factory Default
Max. 63 characters Specifies an alias for the port to help administrators
differentiate between different ports. Example: PLC 1 None
Speed
Setting Description Factory Default
Auto Allows the port to use the IEEE 802.3u protocol to negotiate
with connected devices. The port and connected devices will
determine the best speed for that connection.
Auto
100M-Full Choose one of these fixed speed options if the connected
Ethernet device has trouble auto-negotiating for line speed.
100M-Half
10M-Full
10M-Half

PT-7728-PTP Featured Functions
3-5
FDX Flow Ctrl
Setting Description Factory Default
Enable E
nables flow control for this port when the port's Speed is set to
Auto. Disable
Disable D
isables flow control for this port when the port's Speed is set
to Auto.
This setting enables or disables flow control for the port when the port's Speed is set to Auto. The final result
will be determined by the Auto process between the PT-7728-PTP and connected devices.
MDI/MDIX
Setting Description Factory Default
Auto Allows the port to auto-detect the port type of the connected
Ethernet device and change the port type accordingly. Auto
MDI Choose MDI or MDIX if the connected Ethernet device has
trouble auto-negotiating for port type.
MDIX
Network
The Network configuration page allows users to configure both IPv4 and IPv6 parameters for management
access over the network. This Moxa Ethernet switch supports both IPv4 and IPv6, and can be managed through
either of these address types. An explanation of each configuration item follows.
IPv4
IPv4 settings include the switch’s IP address and subnet mask, as well as the IP address of the default gateway.
In addition, input cells are provided for the IP addresses of a 1st and 2nd DNS server.
IPv6
IPv6 settings include two distinct address types: Link-Local Unicast address and Global Unicast address. A
Link-Local address makes the switch accessible over IPv6 for all devices attached to the same local subnet. To
connect to a larger network with multiple segments, the switch must be configured with a Global Unicast
address.

PT-7728-PTP Featured Functions
3-6
IPv4
Auto IP Configuration
Setting Description Factory Default
Disable Select this to set the PT-7728-PTP’s IP address manually. Disable
By DHCP The PT-7728-PTP’s IP address will be assigned automatically by
the network’s DHCP server.
By BootP The PT-7728-PTP’s IP address will be assigned automatically by
the network’s BootP server.
Switch IP Address
Setting Description Factory Default
IP address for the
PT-7728-PTP This assigns the PT-7728-PTP's IP address on a TCP/IP network. 192.168.127.253
Switch Subnet Mask
Setting Description Factory Default
Subnet mask for the
PT-7728-PTP This identifies the type of network to which the PT-7728-PTP is connected (e.g., 255.255.0.0 for a Class B network, or
255.255.255.0 for a Class C network).
255.255.255.0
Default Gateway
Setting Description Factory Default
IP address for gateway
This specifies the IP address of the router that connects the LAN
to an outside network. None
DNS IP Address
Setting Description Factory Default
IP address for DNS
server This specifies the IP address of the DNS server used by your
network. After specifying the DNS server’s IP address, you can
use the PT-7728-PTP’s URL (e.g., www.PT.company.com) to
open the web console instead of entering the IP address.
None
IP address for 2nd DNS
server This specifies the IP address of the secondary DNS server used by your network. The PT-7728-PTP will use the secondary DNS
server if the first DNS server fails to connect.
None
IPv6
Global Unicast Address Prefix (Prefix Length: 64 bits)
Setting Description Factory Default
Global Unicast Address
Prefix The prefix value must be formatted according to RFC 2373 “IPv6 Addressing Architecture,” using 8 colon-separated 16-bit
hexadecimal values. One double colon may be used in the
address to indicate the appropriate number of zeros required to
fill the undefined fields.
None
Global Unicast Address
Setting Description Factory Default
None Display an IPv6 Global Unicast address. The network portion of
a Global Unicast address can be configured by specifying the
Global Unicast Prefix and using a EUI-64 interface ID in the low
order 64 bits. The host portion of a Global Unicast address is
automatically generated using the modified EUI-64 form of the
interface identifier (the switch’s MAC address)

PT-7728-PTP Featured Functions
3-7
Link-Local Address
Setting Description Factory Default
None The network portion of a Link-Local address is FE80 and the
host portion of a Link-Local address is automatically generated
using the modified EUI-64 form of the interface identifier (the
switch’s MAC address)
FE80: (EUI-64 form
of the MAC address)
Neighbor Cache
Setting Description Factory Default
None The information in the neighbor cache includes the neighboring
node IPv6 address, the corresponding Link-Layer address, and
the current state of the entry.
None
GARP Timer Parameters
General Setting
Setting Description Factory Default
Join Time (ms) Period for sending Join messages 200
Leave Time (ms) Period for sending Leave messages 600
Leaveall Time (ms) Period for sending Leaveall messages 10000